Cita APA (7a ed.)

Contreras, E. M., Bértola, N. C., Giannuzzi, L., & Zaritzky, N. E. (2002). A modified method to determine biomass concentration as COD in pure cultures and in activated sludge systems.

Cita Chicago Style (17a ed.)

Contreras, Edgardo Martín, Nora Cristina Bértola, Leda Giannuzzi, y Noemí Elisabet Zaritzky. A Modified Method to Determine Biomass Concentration as COD in Pure Cultures and in Activated Sludge Systems. 2002.

Cita MLA (8a ed.)

Contreras, Edgardo Martín, et al. A Modified Method to Determine Biomass Concentration as COD in Pure Cultures and in Activated Sludge Systems. 2002.